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  #1  
Old 10-09-2012, 06:41 PM
jrprich jrprich is offline
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P938 Trigger improvement




It is possible to get a much smoother and lighter trigger on the Sig P938





This is one average of fifteen pulls.
Also shot over 150 rounds of Federal bulk 115gr FMJ today with NO failures at all
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  #2  
Old 10-09-2012, 09:43 PM
UncleDirty UncleDirty is offline
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what did you do to get it to this point?
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  #3  
Old 10-09-2012, 10:45 PM
Arourasphere Arourasphere is offline
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Quote:
Originally Posted by UncleDirty View Post
what did you do to get it to this point?
+1. subscribed to find out.
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  #4  
Old 10-09-2012, 10:51 PM
DB1911 DB1911 is offline
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No offense, but I'm skeptical, so could you please elaborate? I'm sure we'd all like to know what you've come up with.


Thanks,

DB
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  #5  
Old 10-09-2012, 11:19 PM
jrprich jrprich is offline
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Quote:
Originally Posted by DB1911 View Post
No offense, but I'm skeptical, so could you please elaborate? I'm sure we'd all like to know what you've come up with.
Thanks,
DB
OK,

No gunsmith was harmed or paid in this exercise

Trigger Pull: Brand new, unfired: 8.2lbs
Trigger felt gritty and long, makes clunking noises on reset.

Changes made to reach this point in the order done:

Cleaned the frame and all parts with brake clean to remove and oil products. (NC)
Applied Frog Lube to the entire frame and all internal parts (NC)
Polished all contact points in the hammer and sear (NC)
Polished the entire trigger bow (NC)

-----At this point the pull was averaging about 7.2 lbs--------------

Replaced the plastic trigger with a custom SS trigger ($40.00)
Slightly changed the pull of the sear spring leaf (NC)
Replaced the main spring with a Wolff Reduced Power 20lb spring for a Colt Mustang ($4.19)
http://www.midwayusa.com/product/376...-reduced-power

------At this point the pull was averaging about 4.3 lbs---------------

I suspect the greatest change was from the changing of the mainspring

Have shot over 600 rounds of 115gr FMJ since purchased

No recommendation is made about what you should do with your gun

No warranty or promise is made about what similar changes to your gun may result in.

Last edited by jrprich; 10-09-2012 at 11:27 PM.
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  #6  
Old 10-10-2012, 08:39 AM
z34phoenix z34phoenix is offline
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So it sounds like the swap of the main spring contributed the most to the drop in pull. Not bad for an inexpensive part. Was the trigger one of the partsproduction ones?
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  #7  
Old 10-10-2012, 11:36 AM
jrprich jrprich is offline
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Originally Posted by z34phoenix View Post
So it sounds like the swap of the main spring contributed the most to the drop in pull. Not bad for an inexpensive part. Was the trigger one of the partsproduction ones?
To verify I would need to swap the stock spring back in and test again which I will do at the next cleaning. It was a bit odd as I tried this spring on my 238 last year and the result was that the average trigger pull went up about 1.5 lb so I removed it and tossed it in the parts drawer.

Yes the trigger was a 238 SS from partsproduction
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  #8  
Old 10-10-2012, 11:55 AM
jtivat jtivat is offline
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Where did you get the SS trigger?

Thanks
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  #9  
Old 10-10-2012, 12:04 PM
jrprich jrprich is offline
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Originally Posted by jtivat View Post
Where did you get the SS trigger?

Thanks
If anyone is interested in these CNC Stainless Steel triggers for the P238 or P938 you should contact Glen at [email protected]
He has these in bare stainless as well as black ones.
No relation to me, just a nice guy with a quality product.
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  #10  
Old 10-10-2012, 08:42 PM
abnranger abnranger is offline
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the problem with a 3.5lb trigger in that small of a package would be? IMHO you risk improper function if you get it too light...this is a carry lots shoot little pistol; not one for PPC.
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  #11  
Old 10-10-2012, 08:47 PM
jrprich jrprich is offline
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Quote:
Originally Posted by abnranger View Post
the problem with a 3.5lb trigger in that small of a package would be? IMHO you risk improper function if you get it too light...this is a carry lots shoot little pistol; not one for PPC.
It is not a 3.5 lb trigger, it is a 4.3lb.
But the trigger pull always varies.
And I do shoot it a lot, over 650 rounds in a month so far, which is the only way I know to get and keep accurate with any gun.
If I start getting failures I can always swap the stock hammer spring back in.
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  #12  
Old 12-30-2012, 07:14 PM
partsproduction partsproduction is offline
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Quote:
If anyone is interested in these CNC Stainless Steel triggers for the P238 or P938
For the record, we are currently out of stock on both triggers and MSH's. Trigger production is supposed to resume Monday, but the batch is for 1000 pcs and therefore will take some time. Those emailing me are to be notified when we have triggers available again. Black triggers will take an extra 3-5 weeks. Please don't send any money until notified.
Thanks,
parts
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Sig P-238 trigger installation video;http://www.youtube.com/watch?v=Jh2v_-87DRM
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  #13  
Old 12-30-2012, 07:47 PM
jrprich jrprich is offline
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Quote:
Originally Posted by partsproduction View Post
For the record, we are currently out of stock on both triggers and MSH's. Trigger production is supposed to resume Monday, but the batch is for 1000 pcs and therefore will take some time. Those emailing me are to be notified when we have triggers available again. Black triggers will take an extra 3-5 weeks. Please don't send any money until notified.
Thanks,
parts
Glen,

So sorry if I created any problems for you or your shop by promoting your fine triggers on forums.
I was just replying to many questions as to "where did you get that trigger"?

Take care,

Jim
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  #14  
Old 06-21-2013, 11:50 AM
i_arch_360 i_arch_360 is offline
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I just picked up a P938 for my dad and we'd like to swap some parts out. Is there any place to buy new springs and trigger? I am assuming that most of the guts of this pistol are not interchangeable with 1911' parts.

thanks
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  #15  
Old 06-21-2013, 01:35 PM
JPhoenixX JPhoenixX is offline
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Not interchangeable with a 1911 but most of it is the same as a colt mustang
I didn't notice much of a difference when I swapped out the hammer spring most of the drop came from slightly unbending the mainspring and polishing all the internals. I got mine down to an average of 4.1 lbs with no failures yet.
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  #16  
Old 06-21-2013, 01:40 PM
jrprich jrprich is offline
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Quote:
Originally Posted by i_arch_360 View Post
I just picked up a P938 for my dad and we'd like to swap some parts out. Is there any place to buy new springs and trigger? I am assuming that most of the guts of this pistol are not interchangeable with 1911' parts.

thanks
Look back at post #9
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  #17  
Old 06-22-2013, 12:56 PM
Pappy42 Pappy42 is offline
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Quote:
Originally Posted by jrprich View Post
To verify I would need to swap the stock spring back in and test again which I will do at the next cleaning. It was a bit odd as I tried this spring on my 238 last year and the result was that the average trigger pull went up about 1.5 lb so I removed it and tossed it in the parts drawer.

Yes the trigger was a 238 SS from partsproduction
I'd be interested in the results of this test, if convenient.
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  #18  
Old 06-22-2013, 01:05 PM
jrprich jrprich is offline
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Quote:
Originally Posted by Pappy42 View Post
I'd be interested in the results of this test, if convenient.
I never did the test as I like the trigger the way it is now and the Wolff spring was very inexpensive.
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  #19  
Old 06-23-2013, 11:39 PM
345WinOr 345WinOr is offline
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MSH for the P238?

Quote:
Originally Posted by partsproduction View Post
For the record, we are currently out of stock on both triggers and MSH's. Trigger production is supposed to resume Monday, but the batch is for 1000 pcs and therefore will take some time. Those emailing me are to be notified when we have triggers available again. Black triggers will take an extra 3-5 weeks. Please don't send any money until notified.
Thanks,
parts
Cool... do you have these in stock?
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